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Road to Rio

Infographic: The secret life of drinking water

Water scarcity will be one of the defining features of the 21st century. The U.N. predicts that by 2025 two thirds of the world's population will suffer water shortages. Here CNN takes a look at what we do with the water we can drink. Find out more at unwater.org.

Produced by Mairi Mackay, CNN @mairicnn and George Webster, for CNN @George_CNN Designed by Matt Barringer, CNN @eskimomatt Sources: World Health Organization, UNHabitat, Water Supply and Sanitation Collaborative Council, UNEP, World Water Assessment Programme